private void addToggleOptionalCheckBox(final ExtendedForm form, final Form<?> optionalContainer) {
    form.add(
        new Label("toggleOptional.label", new ResourceModel("dicom.edit.toggleOptional.label")));

    AjaxCheckBox ajaxCheckBox =
        new AjaxCheckBox("toggleOptional", new Model<Boolean>()) {

          private static final long serialVersionUID = 1L;

          @Override
          protected void onUpdate(AjaxRequestTarget target) {
            target.add(optionalContainer.setVisible(this.getModelObject()));
          }
        };

    AjaxFormSubmitBehavior onClick =
        new AjaxFormSubmitBehavior(optionalContainer, "change") {

          private static final long serialVersionUID = 1L;

          protected void onEvent(final AjaxRequestTarget target) {
            super.onEvent(target);
          }
        };

    ajaxCheckBox.add(onClick);
    form.add(ajaxCheckBox);
  }
  private void addMandatoryFormAttributes(ExtendedForm form) {

    form.add(
        new Label("xdsSourceUid.label", new ResourceModel("dicom.edit.xds.xdsSourceUid.label")));
    FormComponent<String> xdsSourceUidField =
        new TextField<String>("xdsSourceUid", xdsSourceUidModel);
    xdsSourceUidField.setType(String.class);
    xdsSourceUidField.setRequired(true);
    form.add(xdsSourceUidField);
  }
 public XDSSourceEditPage(
     final ModalWindow window, XDSSourceModel model, final ConfigTreeNode deviceNode) {
   super();
   try {
     add(new WebMarkupContainer("edit-xdssource-title").setVisible(model != null));
     setOutputMarkupId(true);
     final ExtendedForm form = new ExtendedForm("form");
     form.setResourceIdPrefix("dicom.edit.xds.");
     Device device = ((DeviceModel) deviceNode.getModel()).getDevice();
     initAttributes(device.getDeviceExtension(XdsSource.class));
     addMandatoryFormAttributes(form);
     addOptionalFormAttributes(form);
     addSaveButton(window, deviceNode, form);
     addCancelButton(window, form);
     add(form);
   } catch (ConfigurationException e) {
     log.error("{}: Error modifying XDS Source: {}", this, e);
     if (log.isDebugEnabled()) e.printStackTrace();
     throw new ModalWindowRuntimeException(e.getLocalizedMessage());
   }
 }
  private void addCancelButton(final ModalWindow window, final ExtendedForm form) {
    form.add(
        new AjaxButton("cancel", new ResourceModel("cancelBtn"), form) {

          private static final long serialVersionUID = 1L;

          @Override
          protected void onSubmit(AjaxRequestTarget target, Form<?> form) {
            window.close(target);
          }

          @Override
          protected void onError(AjaxRequestTarget arg0, Form<?> arg1) {}
        }.setDefaultFormProcessing(false));
  }
  private void addOptionalFormAttributes(ExtendedForm form) {
    final Form<?> optionalContainer = new Form<Object>("optional");
    optionalContainer.setOutputMarkupId(true);
    optionalContainer.setOutputMarkupPlaceholderTag(true);
    optionalContainer.setVisible(false);
    form.add(optionalContainer);
    addToggleOptionalCheckBox(form, optionalContainer);

    FormUtils.addGenericField(optionalContainer, "xdsRegistry", xdsRegistry, false, false);
    FormUtils.addGenericField(optionalContainer, "xdsRepository", xdsRepository, false, false);

    optionalContainer.add(
        new Label("xdsSourceUrl.label", new ResourceModel("dicom.edit.xds.xdsSourceUrl.label"))
            .setOutputMarkupPlaceholderTag(true));
    optionalContainer.add(
        new TextField<String>("xdsSourceUrl", xdsSourceUrlModel).setType(String.class));
  }
  private void addSaveButton(
      final ModalWindow window, final ConfigTreeNode deviceNode, final ExtendedForm form) {
    form.add(
        new IndicatingAjaxButton("submit", new ResourceModel("saveBtn"), form) {

          private static final long serialVersionUID = 1L;

          @Override
          protected void onSubmit(AjaxRequestTarget target, Form<?> form) {
            try {
              Device device = ((DeviceModel) deviceNode.getModel()).getDevice();
              XdsSource xds = device.getDeviceExtension(XdsSource.class);

              xds.setUid(xdsSourceUidModel.getObject());

              try {
                xds.setRegistry(xdsRegistry.getModifiedConfigObj().getRegistry());
              } catch (NullPointerException e) {
                /* thats fine, this means nothing has changed */
              }

              try {
                xds.setRepository(xdsRepository.getModifiedConfigObj().getRepository());
              } catch (NullPointerException e) {
                /* thats fine, this means nothing has changed */
              }

              xds.setUrl(xdsSourceUrlModel.getObject());

              ConfigTreeProvider.get().mergeDevice(device, TreeNodeType.XDSSource);
              window.close(target);
            } catch (Exception e) {
              log.error("{}: Error modifying XDS Registry: {}", this, e);
              if (log.isDebugEnabled()) e.printStackTrace();
              throw new ModalWindowRuntimeException(e.getLocalizedMessage());
            }
          }

          @Override
          protected void onError(AjaxRequestTarget target, Form<?> form) {
            if (target != null) target.add(form);
          }
        });
  }